From 63167f223e1f54910f6b80e698390ee60aec79ee Mon Sep 17 00:00:00 2001
From: Benji Dial <Benji3.141@gmail.com>
Date: Tue, 11 Aug 2020 11:33:21 -0400
Subject: lots of progress

currently, BAR fields of IDE drives are all returning zero, and the ATA read function isn't working. i'm not sure why.
i'm going to work on VESA next, and come back to the IDE driver later
---
 src/kernel/ata.h | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 73 insertions(+), 4 deletions(-)

(limited to 'src/kernel/ata.h')

diff --git a/src/kernel/ata.h b/src/kernel/ata.h
index 605f991..7c42cdb 100644
--- a/src/kernel/ata.h
+++ b/src/kernel/ata.h
@@ -1,6 +1,75 @@
-#include <stdint.h>
+enum {
+  ATA_STATUS_BUSY        = 0x80,
+  ATA_STATUS_DRIVE_READY = 0x40,
+  ATA_STATUS_DRIVE_FAULT = 0x20,
+  ATA_STATUS_SEEK_DONE   = 0x10,
+  ATA_STATUS_DATA_READY  = 0x08,
+  ATA_STATUS_CORRECTED   = 0x04,
+  ATA_STATUS_INDEX       = 0x02,
+  ATA_STATUS_ERROR       = 0x01
+};
 
-void init_ata();
+enum {
+  ATA_ERROR_BAD_BLOCK      = 0x80,
+  ATA_ERROR_UNCORRECTABLE  = 0x40,
+  ATA_ERROR_MEDIA_SWAPPED  = 0x20,
+  ATA_ERROR_NO_ID_MARK     = 0x10,
+  ATA_ERROR_MEDIA_SWAPPING = 0x08,
+  ATA_ERROR_ABORTED_CMD    = 0x04,
+  ATA_ERROR_NO_TRACK_ZERO  = 0x02,
+  ATA_ERROR_NO_ADDR_MARK   = 0x01
+};
 
-uint8_t read_sectors(uint16_t start, uint8_t count, void *buffer);
-uint8_t write_sectors(uint16_t start, uint8_t count, void *buffer);
\ No newline at end of file
+enum {
+  ATA_CMD_READ      = 0x20,
+  ATA_CMD_WRITE     = 0x30,
+  ATA_CMD_WRITE_EXT = 0x34,
+  ATA_CMD_READ_EXT  = 0x40,
+  ATAPI_CMD         = 0xa0,
+  ATAPI_CMD_ID      = 0xa1,
+  ATA_CMD_FLUSH     = 0xe7,
+  ATA_CMD_FLUSH_EXT = 0xea,
+  ATA_CMD_ID        = 0xec,
+};
+
+enum {
+  ATAPI_CMD_EJECT = 0x1b,
+  ATAPI_CMD_READ  = 0xa8
+};
+
+enum {
+  ATA_REG_DATA       = 0x0,
+  ATA_REG_ERROR      = 0x1,
+  ATA_REG_FEAT       = 0x1,
+  ATA_REG_COUNT_LOW  = 0x2,
+  ATA_REG_LBA0       = 0x3,
+  ATA_REG_LBA1       = 0x4,
+  ATA_REG_LBA2       = 0x5,
+  ATA_REG_SELECT     = 0x6,
+  ATA_REG_CMD        = 0x7,
+  ATA_REG_STATUS     = 0x7,
+  ATA_REG_COUNT_HIGH = 0x8,
+  ATA_REG_LBA3       = 0x9,
+  ATA_REG_LBA4       = 0xa,
+  ATA_REG_LBA5       = 0xb,
+  ATA_REG_CONTROL    = 0xc,
+  ATA_REG_ALT_STATUS = 0xc,
+  ATA_REG_ADDR       = 0xd
+};
+
+enum {
+  ATA_MASTER_SELECT = 0xa0,
+  ATA_SLAVE_SELECT  = 0xb0
+};
+
+enum {
+  ATA_SET_EXT = 0x04000000
+};
+
+enum {
+  ATA_CAP_LBA = 0x00000200
+};
+
+enum {
+  ATA_CONTROL_NO_IRQS = 0x02
+};
\ No newline at end of file
-- 
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